cairo:font-face-reference (face)

face -- a cairo:font-face-t instance, may be nil in which case this function does nothing

The referenced cairo:font-face-t instance.

Increases the reference count on face by one. This prevents the font face from being destroyed until a matching call to the cairo:font-face-destroy function is made.

The number of references to a cairo:font-face-t instance can be get using the cairo:font-face-reference-count function.